Police believe Nadell was killed sometime between Friday night and early Saturday morning. They haven't revealed if her house had been robbed or not.

Friends say Nadell was a community activist who passionately devoted her life to Democratic politics, women's rights and the environment. Clarkstown Supervisor Alex Gromack, who knew Nadell for more than 20 years, says she was dedicated to making Rockland County a better place to live.

"She couldn't have had an enemy in the world," says Gromack. "She was a lovely person."

Police say no arrests have been made. Nadell's funeral will be this Wednesday at the Hellman Memorial Chapel in Spring Valley.